☰

Gazelle extract featured artists from description

Tries to recognize and add featured artists from selected text in group description

当前为 2020-10-03 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Gazelle extract featured artists from description
  3. // @namespace    https://greasyfork.org/cs/users/321857-anakunda
  4. // @version      1.40
  5. // @description  Tries to recognize and add featured artists from selected text in group description
  6. // @author       Anakunda
  7. // @copyright    2020, Anakunda (https://greasyfork.org/cs/users/321857-anakunda)
  8. // @license      GPL-3.0-or-later
  9. // @match        https://redacted.ch/torrents.php?*id=*
  10. // @match        https://orpheus.network/torrents.php?*id=*
  11. // @match        https://notwhat.cd/torrents.php?*id=*
  12. // @grant        GM_getValue
  13. // @grant        GM_setValue
  14. // @grant        GM_deleteValue
  15. // ==/UserScript==
  16.  
  17. const multiArtistParsers = [
  18.   /\s*[,;\u3001](?!\s*(?:[JjSs]r)\b)(?:\s*[Aa]nd\s+)?\s*/,
  19.   /\s+[\/\|\×]\s+/,
  20. ];
  21. const ampersandParsers = [
  22.   /\s+(?:vs\.?|X)\s+(?!\s*(?:[\&\/\+\,\;]|and))/i,
  23.   /\s*[;\/\|\×]\s*(?!\s*(?:\s*[\&\/\+\,\;]|and))/i,
  24.   /\s+(?:[\&\+]|and)\s+(?!his\b|her\b|Friends$|Strings$)/i, // /\s+(?:[\&\+]|and)\s+(?!(?:The|his|her|Friends)\b)/i,
  25.   /\s*\+\s*(?!(?:his\b|her\b|Friends$|Strings$))/i,
  26. ];
  27. const featArtistParsers = [
  28.   ///\s+(?:meets)\s+(.+?)\s*$/i,
  29.   /* 0 */ /\s+(?:[Ww](?:ith|\.?\/)|[Aa]vec)\s+(?!his\b|her\b|Friends$|Strings$)(.+?)\s*$/,
  30.   /* 1 */ /(?:\s+[\-\−\—\–\_])?\s+(?:[Ff]eaturing\s+|(?:[Ff]eat|[Ff]t|FT)\.\s*|[Ff]\.?\/\s+)([^\(\)\[\]\{\}]+?)(?=\s*(?:[\(\[\{].*)?$)/,
  31.   /* 2 */ /\s+\[\s*f(?:eat(?:\.|uring)|t\.|\.?\/)\s+([^\[\]]+?)\s*\]/i,
  32.   /* 3 */ /\s+\(\s*f(?:eat(?:\.|uring)|t\.|\.?\/)\s+([^\(\)]+?)\s*\)/i,
  33.   /* 4 */ /\s+\[\s*(?:(?:en\s+)?duo\s+)?avec\s+([^\[\]]+?)\s*\]/i,
  34.   /* 5 */ /\s+\(\s*(?:(?:en\s+)?duo\s+)?avec\s+([^\(\)]+?)\s*\)/i,
  35.   /* 6 */ /\s+\[\s*(?:with|[Ww]\.?\/)\s+(?![Hh]is\b|[Hh]er\b|Friends$|Strings$)([^\[\]]+?)\s*\]/,
  36.   /* 7 */ /\s+\(\s*(?:with|[Ww]\.?\/)\s+(?![Hh]is\b|[Hh]er\b|Friends$|Strings$)([^\(\)]+?)\s*\)/,
  37. ];
  38. const remixParsers = [
  39.   /\s+\(([^\(\)]+?)[\'\’\`]s[^\(\)]*\s(?:(?:Re)?Mix|Reworx)\)/i,
  40.   /\s+\[([^\[\]]+?)[\'\’\`]s[^\[\]]*\s(?:(?:Re)?Mix|Reworx)\]/i,
  41.   /\s+\(([^\(\)]+?)\s+(?:(?:Extended|Enhanced)\s+)?(?:Remix|Reworx)\)/i,
  42.   /\s+\[([^\[\]]+?)\s+(?:(?:Extended|Enhanced)\s+)?(?:Remix|Reworx)\]/i,
  43.   /\s+\(Remix(?:ed)?\s+by\s+([^\(\)]+)\)/i,
  44.   /\s+\[Remix(?:ed)?\s+by\s+([^\[\]]+)\]/i,
  45. ];
  46. const otherArtistsParsers = [
  47.   [/^(.*?)\s+(?:under|(?:conducted)\s+by)\s+(.*)$/, 4],
  48.   [/^()(.*?)\s+\(conductor\)$/i, 4],
  49.   //[/^()(.*?)\s+\(.*\)$/i, 1],
  50. ];
  51. const pseudoArtistParsers = [
  52.   /* 0 */ /^(?:Various(?:\s+Artists)?|VA|\<various\s+artists\>|Různí(?:\s+interpreti)?)$/i,
  53.   /* 1 */ /^(?:#??N[\/\-]?A|[JS]r\.?)$/i,
  54.   /* 2 */ /^(?:auditorium|[Oo]becenstvo|[Pp]ublikum)$/,
  55.   /* 3 */ /^(?:(Special\s+)??Guests?|Friends|(?:Studio\s+)?Orchestra)$/i,
  56.   /* 4 */ /^(?:Various\s+Composers)$/i,
  57.   /* 5 */ /^(?:[Aa]nonym)/,
  58.   /* 6 */ /^(?:traditional|trad\.|lidová)$/i,
  59.   /* 7 */ /\b(?:traditional|trad\.|lidová)$/,
  60.   /* 8 */ /^(?:tradiční|lidová)\s+/,
  61.   /* 9 */ /^(?:[Ll]iturgical\b|[Ll]iturgick[áý])/,
  62. ];
  63.  
  64. const siteApiTimeframeStorageKey = document.location.hostname + ' API time frame';
  65. const gazelleApiFrame = 10500;
  66. var artistIndex, siteArtistsCache = {}, notSiteArtistsCache = [], xhr = new XMLHttpRequest;
  67. var modal = null, btnAdd = null, btnCustom = null, customCtrls = [], sel = null, ajaxRejects = 0;
  68. var prefs = {
  69.   set: function(prop, def) { this[prop] = GM_getValue(prop, def) }
  70. };
  71.  
  72. Array.prototype.includesCaseless = function(str) {
  73.   if (typeof str != 'string') return false;
  74.   str = str.toLowerCase();
  75.   return this.find(elem => typeof elem == 'string' && elem.toLowerCase() == str) != undefined;
  76. };
  77. Array.prototype.pushUnique = function(...items) {
  78.   if (Array.isArray(items) && items.length > 0) items.forEach(it => { if (!this.includes(it)) this.push(it) });
  79.   return this.length;
  80. };
  81. Array.prototype.pushUniqueCaseless = function(...items) {
  82.   if (Array.isArray(items) && items.length > 0) items.forEach(it => { if (!this.includesCaseless(it)) this.push(it) });
  83.   return this.length;
  84. };
  85.  
  86. (function() {
  87.   'use strict';
  88.  
  89.   const styleSheet = `
  90. .modal {
  91.   position: fixed;
  92.   left: 0;
  93.   top: 0;
  94.   width: 100%;
  95.   height: 100%;
  96.   background-color: rgba(0, 0, 0, 0.5);
  97.   opacity: 0;
  98.   visibility: hidden;
  99.   transform: scale(1.1);
  100.   transition: visibility 0s linear 0.25s, opacity 0.25s 0s, transform 0.25s;
  101. }
  102. .modal-content {
  103.   position: absolute;
  104.   top: 50%;
  105.   left: 50%;
  106.   font-size: 17px;
  107.   transform: translate(-50%, -50%);
  108.   background-color: FloralWhite;
  109.   color: black;
  110.   width: 31rem;
  111.   border-radius: 0.5rem;
  112.   padding: 2rem 2rem 2rem 2rem;
  113.   font-family: monospace;
  114. }
  115. .show-modal {
  116.   opacity: 1;
  117.   visibility: visible;
  118.   transform: scale(1.0);
  119.   transition: visibility 0s linear 0s, opacity 0.25s 0s, transform 0.25s;
  120. }
  121. input[type="text"] { cursor: text; }
  122. input[type="radio"] { cursor: pointer; }
  123. .lbl { cursor: pointer; }
  124.  
  125. .tooltip {
  126.   position: relative;
  127. }
  128.  
  129. .tooltip .tooltiptext {
  130.   visibility: hidden;
  131.   width: 120px;
  132.   background-color: #555;
  133.   color: #fff;
  134.   text-align: center;
  135.   border-radius: 6px;
  136.   padding: 5px 0;
  137.   position: absolute;
  138.   z-index: 1;
  139.   bottom: 125%;
  140.   left: 50%;
  141.   margin-left: -60px;
  142.   opacity: 0;
  143.   transition: opacity 0.3s;
  144. }
  145.  
  146. .tooltip .tooltiptext::after {
  147.   position: absolute;
  148.   top: 100%;
  149.   left: 50%;
  150.   margin-left: -5px;
  151.   border-width: 5px;
  152.   border-style: solid;
  153.   border-color: #555 transparent transparent transparent;
  154. }
  155.  
  156. .tooltip:hover .tooltiptext {
  157.   visibility: visible;
  158.   opacity: 1;
  159. }
  160. `;
  161.  
  162.   var addBox = document.querySelector('form.add_form[name="artists"]');
  163.   if (addBox == null) return;
  164.   btnAdd = document.createElement('input');
  165.   btnAdd.id = 'add-artists-from-selection';
  166.   btnAdd.value = 'Extract from selection';
  167.   btnAdd.onclick = add_from_selection;
  168.   btnAdd.type = 'button';
  169.   btnAdd.style.marginLeft = '5px';
  170.   btnAdd.style.visibility = 'hidden';
  171.   addBox.appendChild(btnAdd);
  172.  
  173.   var style = document.createElement('style');
  174.   document.head.appendChild(style);
  175.   style.id = 'artist-parser-form';
  176.   style.type = 'text/css';
  177.   style.innerHTML = styleSheet;
  178.   var el, elem = [];
  179.   elem.push(document.createElement('div'));
  180.   elem[elem.length - 1].className = 'modal';
  181.   elem[elem.length - 1].id = 'add-from-selection-form';
  182.   modal = elem[0];
  183.   elem.push(document.createElement('div'));
  184.   elem[elem.length - 1].className = 'modal-content';
  185.   elem.push(document.createElement('input'));
  186.   elem[elem.length - 1].id = 'btnFill';
  187.   elem[elem.length - 1].type = 'submit';
  188.   elem[elem.length - 1].value = 'Capture';
  189.   elem[elem.length - 1].style = "position: fixed; right: 30px; width: 80px; top: 30px;";
  190.   elem[elem.length - 1].onclick = doParse;
  191.   elem.push(document.createElement('input'));
  192.   elem[elem.length - 1].id = 'btnCancel';
  193.   elem[elem.length - 1].type = 'button';
  194.   elem[elem.length - 1].value = 'Cancel';
  195.   elem[elem.length - 1].style = "position: fixed; right: 30px; width: 80px; top: 65px;";
  196.   elem[elem.length - 1].onclick = closeModal;
  197.   var presetIndex = 0;
  198.   function addPreset(val, label = 'Custom', rx = null, order = [1, 2]) {
  199. 	elem.push(document.createElement('div'));
  200. 	el = document.createElement('input');
  201. 	elem[elem.length - 1].style.paddingBottom = '10px';
  202. 	el.id = 'parse-preset-' + val;
  203. 	el.name = 'parse-preset';
  204. 	el.value = val;
  205. 	if (val == 1) el.checked = true;
  206. 	el.type = 'radio';
  207. 	el.onchange = update_custom_ctrls;
  208. 	if (rx) {
  209. 	  el.rx = rx;
  210. 	  el.order = order;
  211. 	}
  212. 	if (val == 999) btnCustom = el;
  213. 	elem[elem.length - 1].appendChild(el);
  214. 	el = document.createElement('label');
  215. 	el.style.marginLeft = '10px';
  216. 	el.style.marginRight = '10px';
  217. 	el.htmlFor = 'parse-preset-' + val;
  218. 	el.className = 'lbl';
  219. 	el.innerHTML = label;
  220. 	elem[elem.length - 1].appendChild(el);
  221. 	if (val != 999) return;
  222. 	el = document.createElement('input');
  223. 	el.type = 'text';
  224. 	el.id = 'custom-pattern';
  225. 	el.style.width = '20rem';
  226. 	el.style.fontFamily = 'monospace';
  227. 	el.autoComplete = "on";
  228. 	addTooltip(el, 'RegExp to parse lines, first two captured groups are used');
  229. 	customCtrls.push(elem[elem.length - 1].appendChild(el));
  230. 	el = document.createElement('input');
  231. 	el.type = 'radio';
  232. 	el.name = 'parse-order';
  233. 	el.id = 'parse-order-1';
  234. 	el.value = 1;
  235. 	el.checked = true;
  236. 	el.style.marginLeft = '1rem';
  237. 	addTooltip(el, 'Captured regex groups assigned in order $1: artist(s), $2: assignment');
  238. 	customCtrls.push(elem[elem.length - 1].appendChild(el));
  239. 	el = document.createElement('label');
  240. 	el.htmlFor = 'parse-order-1';
  241. 	el.textContent = '→';
  242. 	el.style.marginLeft = '5px';
  243. 	elem[elem.length - 1].appendChild(el);
  244. 	el = document.createElement('input');
  245. 	el.type = 'radio';
  246. 	el.name = 'parse-order';
  247. 	el.id = 'parse-order-2';
  248. 	el.value = 2;
  249. 	el.style.marginLeft = '10px';
  250. 	addTooltip(el, 'Captured regex groups assigned in order $1: assignment, $2: artist(s)');
  251. 	customCtrls.push(elem[elem.length - 1].appendChild(el));
  252. 	el = document.createElement('label');
  253. 	el.htmlFor = 'parse-order-2';
  254. 	el.textContent = '←';
  255. 	el.style.marginLeft = '5px';
  256. 	elem[elem.length - 1].appendChild(el);
  257.   }
  258.   addPreset(++presetIndex, escapeHTML('<artist(s)> - <assignment>]'), /^\s*(.+?)(?:\:|\s+[\-\−\—\~\–]+\s+(.*?))?\s*$/);
  259.   addPreset(++presetIndex, escapeHTML('<artist>[, <assignment>]') +
  260. 	'<span style="font-family: initial;">&nbsp;&nbsp;<i>(HRA style)</i></span>', /^\s*(.+?)(?:\:|\s*,\s*(.*?))?\s*$/);
  261.   addPreset(++presetIndex, escapeHTML('<artist(s)>[: <assignment>]'), /^\s*(.+?)(?:\:|\s*:+\s*(.*?))?(?:\s*,)?\s*$/);
  262.   addPreset(++presetIndex, escapeHTML('<artist(s)>[ (<assignment>)]'), /^\s*(.+?)(?:\:|\s+(?:\([^\(\)]+\)|\[[^\[\]]+\]|\{[^\{\}]+\}))?(?:\s*,)?\s*$/);
  263.   addPreset(++presetIndex, escapeHTML('[<assignment> - ]<artist(s)>'), /^\s*(?:(.*?)\s+[\-\−\—\~\–]+\s+)?(.+?)\:?(?:\s*,)?\s*$/, [2, 1]);
  264.   addPreset(++presetIndex, escapeHTML('[<assignment>: ]<artist(s)>'), /^\s*(?:(.*?)\s*:+\s*)?(.+?)\:?(?:\s*,)?\s*$/, [2, 1]);
  265.   addPreset(++presetIndex, escapeHTML('<artist>[ / <assignment>]'), /^\s*(.+?)(?:\:|\s*\/+\s*(.*?))?(?:\s*,)?\s*$/);
  266.   addPreset(++presetIndex, escapeHTML('<artist>[; <assignment>]'), /^\s*(.+?)(?:\:|\s*;\s*(.*?))?(?:\s*,)?\s*$/);
  267.   addPreset(++presetIndex, escapeHTML('[<assignment> / ]<artist(s)>'), /^\s*(?:(.*?)\s*\/+\s*)?(.+?)\:?(?:\s*,)?\s*$/, [2, 1]);
  268.   addPreset(++presetIndex, '<span style="font-family: initial;">From tracklist</span>',
  269. 	/^\s*((?:\d+|[A-Z](?:\d+)?)(?:[\-\.](?:\d+|[A-Za-z])|[A-Za-z])?)(?:\s*[\-\−\—\~\–\.\:]\s*|\s+)(.+?)(?:\s+(\((?:\d+:)?\d+:\d+\)|\[(?:\d+:)?\d+:\d+\]))?\s*$/, []);
  270.   addPreset(999);
  271.   elem.slice(2).forEach(k => { elem[1].appendChild(k) });
  272.   elem[0].appendChild(elem[1]);
  273.   document.body.appendChild(elem[0]);
  274.   window.addEventListener("click", windowOnClick);
  275.   document.addEventListener('selectionchange', () => {
  276. 	var cs = window.getComputedStyle(modal);
  277. 	if (!btnAdd || window.getComputedStyle(modal).visibility != 'hidden') return;
  278. 	var sel = document.getSelection();
  279. 	ShowHideAddbutton();
  280.   });
  281. })();
  282. /^([A-Z])(?:[\-\.\s]?((\d+)(\.?\S+)?))?$/i
  283. function add_from_selection() {
  284.   sel = document.getSelection();
  285.   if (sel.isCollapsed || modal == null) return;
  286.   prefs.set('preset', 1);
  287.   prefs.set('custom_pattern', '^\\s*(.+?)(?:\\s*:+\\s*(.*?)|\\:)?\\s*$');
  288.   prefs.set('custom_pattern_order', 1);
  289.   setRadiosValue('parse-preset', prefs.preset);
  290.   customCtrls[0].value = prefs.custom_pattern;
  291.   setRadiosValue('parse-order', prefs.custom_pattern_order);
  292.   sel = sel.toString();
  293.   update_custom_ctrls();
  294.   modal.classList.add("show-modal");
  295. }
  296.  
  297. function doParse(expr, flags = '') {
  298.   closeModal();
  299.   if (!sel) return;
  300.   let preset = getSelectedRadio('parse-preset');
  301.   if (preset == null) return;
  302.   prefs.preset = preset.value;
  303.   let order = preset.order;
  304.   let custom_parse_order = getSelectedRadio('parse-order');
  305.   let rx = preset.rx;
  306.   if (!rx && preset.value == 999 && custom_parse_order != null) {
  307. 	rx = new RegExp(customCtrls[0].value);
  308. 	order = custom_parse_order != null ?
  309. 	  custom_parse_order.value == 1 ? [1, 2] : custom_parse_order.value == 2 ? [2, 1] : null : [1, 2];
  310.   }
  311.   let artists = [
  312. 	'artist_main', 'artist_guest', 'artists_remix', 'artists_composers',
  313. 	'artists_conductors', 'artists_dj', 'artists_producer',
  314.   ].map(category => Array.from(document.querySelectorAll(`ul#artist_list > li.${category} > a`)).map(a => a.textContent.trim()));
  315.   //artists = artists.map(a => []);
  316.   cleanupArtistsForm();
  317.   artistIndex = 0;
  318.   sel.split(/(?:\r?\n)+/).forEach(function(line) {
  319. 	if (!line || !line.trim()) return;
  320. 	if (/^\s*(?:Recorded|Mastered)\b/i.test(line)) return;
  321. 	line = line.replace(/\s+\(tracks?\b[^\(\)]+\)/, '').replace(/\s+\[tracks?\b[^\[\]]+\]/, '')
  322. 	let matches = /^\s*(?:Produced)[ \-\−\—\~\–]by (.+?)\s*$/.exec(line);
  323. 	if (matches != null) splitAmpersands(matches[1]).forEach(producer => { addArtist(producer, 7) });
  324. 	else if (rx instanceof RegExp && (matches = rx.exec(line)) != null) {
  325. 	  if (!Array.isArray(order) || order.length < 2) {
  326. 		let title = matches[2];
  327. 		if (/^(.+?) [\-\−\—\–] /.test(title)) {
  328. 		  let artist = RegExp.$1;
  329. 		  if ((matches = featArtistParsers.slice(0, 2).reduce((m, rx) => m || rx.exec(artist), null)) != null) {
  330. 			splitAmpersands(artist.slice(0, matches.index)).forEach(artist => { addArtist(artist, 1) });
  331. 			splitAmpersands(matches[1]).forEach(artist => { addArtist(artist, 2) });
  332. 		  } else splitAmpersands(artist).forEach(artist => { addArtist(artist, 1) });
  333. 		}
  334. 		if ((matches = featArtistParsers.reduce((m, rx) => m || rx.exec(title), null)) != null)
  335. 		  splitAmpersands(matches[1]).forEach(artist => { addArtist(artist, 2) });
  336. 		if ((matches = remixParsers.reduce((m, rx) => m || rx.exec(title), null)) != null)
  337. 		  splitAmpersands(matches[1]).forEach(remixer => { addArtist(remixer, 3) });
  338. 	  } else if (matches[order[0]]) {
  339. 		let role = deduceArtist(matches[order[1]]);
  340. 	  	splitAmpersands(matches[order[0]]).forEach(artist => { addArtist(artist, role) });
  341. 	  } else splitAmpersands(matches[order[1]]).forEach(artist => { addArtist(artist, 2) });
  342. 	}
  343.   });
  344.   prefs.custom_pattern = customCtrls[0].value;
  345.   prefs.custom_pattern_order = custom_parse_order != null ? custom_parse_order.value : 1;
  346.   for (let i in prefs) { if (typeof prefs[i] != 'function') GM_setValue(i, prefs[i]) }
  347.   return;
  348.  
  349.   function deduceArtist(str) {
  350. 	if (/\b(?:remix)/i.test(str)) return 3; // remixer
  351. 	if (/\b(?:composer|libretto|lyric\w*|written[ \-\−\—\~\–]by)\b/i.test(str)) return 4; // composer
  352. 	if (/\b(?:conduct|director\b|direction\b)/i.test(str)) return 5; // conductor
  353. 	if (/\b(?:compiler\b)/i.test(str)) return 6; // compiler
  354. 	if (/\b(?:producer\b|produced[ \-\−\—\~\–]by\b)/i.test(str)) return 7; // producer
  355. 	return 2;
  356.   }
  357.  
  358.   function addArtist(name, type = 1) {
  359. 	if (!name || !(type > 0)) return false;
  360. 	if (pseudoArtistParsers.some(rx => rx.test(name))) return false;
  361. 	// avoid dupes
  362. 	if (artists[type - 1].includesCaseless(name)) return false;
  363. 	if (type == 1 && [4, 5].some(cat => artists[cat].includesCaseless(name))) return false;
  364. 	if (type == 2 && [0, 4, 5].some(cat => artists[cat].includesCaseless(name))) return false;
  365. 	let input = getArtistField(artistIndex);
  366. 	if (input == null) {
  367. 	  AddArtistField();
  368. 	  if ((input = getArtistField(artistIndex)) == null) return false;
  369. 	}
  370. 	input.value = name;
  371. 	input.nextElementSibling.value = type;
  372. 	artists[type - 1].pushUniqueCaseless(name);
  373. 	++artistIndex;
  374. 	return true;
  375.   }
  376. }
  377.  
  378. function getArtistField(index) {
  379.   if (!(index >= 0)) return null;
  380.   let inputs = document.querySelectorAll('input[name="aliasname[]"]');
  381.   return index < inputs.length ? inputs[index] : null;
  382. }
  383.  
  384. function closeModal() {
  385.   if (modal == null) return;
  386.   ShowHideAddbutton();
  387.   modal.classList.remove("show-modal");
  388. }
  389.  
  390. function windowOnClick(event) {
  391.   if (modal != null && event.target === modal) closeModal();
  392. }
  393.  
  394. function update_custom_ctrls() {
  395.   function en(elem) {
  396. 	if (elem == null || btnCustom == null) return;
  397. 	elem.disabled = !btnCustom.checked;
  398. 	elem.style.opacity = btnCustom.checked ? 1 : 0.5;
  399.   }
  400.   customCtrls.forEach(k => { en(k) });
  401. }
  402.  
  403. function getSelectedRadio(name) {
  404.   for (var i of document.getElementsByName(name)) { if (i.checked) return i }
  405.   return null;
  406. }
  407.  
  408. function setRadiosValue(name, val) {
  409.   for (var i of document.getElementsByName(name)) { if (i.value == val) i.checked = true }
  410. }
  411.  
  412. function ShowHideAddbutton() {
  413.   //btnAdd.style.visibility = document.getSelection().type == 'Range' ? 'visible' : 'hidden';
  414.   btnAdd.style.visibility = document.getSelection().isCollapsed ? 'hidden' : 'visible';
  415. }
  416.  
  417. function escapeHTML(string) {
  418.   var pre = document.createElement('pre');
  419.   var text = document.createTextNode(string);
  420.   pre.appendChild(text);
  421.   return pre.innerHTML;
  422. }
  423.  
  424. function cleanupArtistsForm() {
  425.   document.querySelectorAll('input[name="aliasname[]"]').forEach(function(input) {
  426. 	input.value = '';
  427. 	input.nextElementSibling.value = 1;
  428.   });
  429. }
  430.  
  431. function addTooltip(elem, text) {
  432.   if (elem == null) return;
  433.   elem.classList.add('tooltip');
  434.   var tt = document.createElement('span');
  435.   tt.className = 'tooltiptext';
  436.   tt.textContent = text;
  437.   elem.appendChild(tt);
  438. }
  439.  
  440. function twoOrMore(artist) { return artist.length >= 2 && !pseudoArtistParsers.some(rx => rx.test(artist)) };
  441. function looksLikeTrueName(artist, index = 0) {
  442.   return twoOrMore(artist)
  443. 	&& (index == 0 || !/^(?:his\b|her\b|Friends$|Strings$)/i.test(artist))
  444. 	&& artist.split(/\s+/).length >= 2
  445. 	&& !pseudoArtistParsers.some(rx => rx.test(artist)) || getSiteArtist(artist);
  446. }
  447.  
  448. function strip(art, level = 0) {
  449.   return typeof art == 'string' ? [
  450. 	/\s+(?:aka|AKA)\.?\s+(.*)$/g,
  451. 	/\s*\([^\(\)]+\)/g,
  452. 	/\s*\[[^\[\]]+\]/g,
  453. 	/\s*\{[^\{\}]+\}/g,
  454.   ].slice(level).reduce((acc, rx) => acc.replace(rx, ''), art) : undefined;
  455. }
  456.  
  457. function getSiteArtist(artist) {
  458.   //if (isOPS) return undefined;
  459.   if (!artist || notSiteArtistsCache.includesCaseless(artist)) return null;
  460.   var key = Object.keys(siteArtistsCache).find(it => it.toLowerCase() == artist.toLowerCase());
  461.   if (key) return siteArtistsCache[key];
  462.   var now = Date.now();
  463.   try { var apiTimeFrame = JSON.parse(window.localStorage[siteApiTimeframeStorageKey]) } catch(e) { apiTimeFrame = {} }
  464.   if (!apiTimeFrame.timeStamp || now > apiTimeFrame.timeStamp + gazelleApiFrame) {
  465. 	apiTimeFrame.timeStamp = now;
  466. 	apiTimeFrame.requestCounter = 1;
  467.   } else ++apiTimeFrame.requestCounter;
  468.   window.localStorage[siteApiTimeframeStorageKey] = JSON.stringify(apiTimeFrame);
  469.   if (apiTimeFrame.requestCounter > 5) {
  470. 	console.debug('getSiteArtist() request exceeding AJAX API time frame: /ajax.php?action=artist&artistname="' +
  471. 		artist + '" (' + apiTimeFrame.requestCounter + ')');
  472. 	++ajaxRejects;
  473. 	return undefined;
  474.   }
  475.   try {
  476. 	var requestUrl = '/ajax.php?action=artist&artistname=' + encodeURIComponent(artist);
  477. 	xhr.open('GET', requestUrl, false);
  478. 	//if (isRED && prefs.redacted_api_key) xhr.setRequestHeader('Authorization', prefs.redacted_api_key);
  479. 	xhr.send();
  480. 	if (xhr.status == 404) {
  481. 	  notSiteArtistsCache.pushUniqueCaseless(artist);
  482. 	  return null;
  483. 	}
  484. 	if (xhr.readyState != XMLHttpRequest.DONE || xhr.status < 200 || xhr.status >= 400) {
  485. 	  console.warn('getSiteArtist("' + artist + '") error:', xhr, 'url:', document.location.origin + requestUrl);
  486. 	  return undefined; // error
  487. 	}
  488. 	let response = JSON.parse(xhr.responseText);
  489. 	if (response.status != 'success') {
  490. 	  notSiteArtistsCache.pushUniqueCaseless(artist);
  491. 	  return null;
  492. 	}
  493. 	siteArtistsCache[artist] = response.response;
  494. 	if (prefs.diag_mode) console.log('getSiteArtist("' + artist + '") success:', siteArtistsCache[artist]);
  495. 	return (siteArtistsCache[artist]);
  496.   } catch(e) {
  497. 	console.error('UA::getSiteArtist("' + artist + '"):', e, xhr);
  498. 	return undefined;
  499.   }
  500. }
  501.  
  502. function splitArtists(str, parsers = multiArtistParsers) {
  503.   var result = [str];
  504.   parsers.forEach(function(parser) {
  505. 	for (var i = result.length; i > 0; --i) {
  506. 	  var j = result[i - 1].split(parser).map(strip);
  507. 	  if (j.length > 1 && j.every(twoOrMore) && !j.some(artist => pseudoArtistParsers.some(rx => rx.test(artist)))
  508. 		  && !getSiteArtist(result[i - 1])) result.splice(i - 1, 1, ...j);
  509. 	}
  510.   });
  511.   return result;
  512. }
  513.  
  514. function splitAmpersands(artists) {
  515.   if (typeof artists == 'string') var result = splitArtists(strip(artists, 1));
  516.   	else if (Array.isArray(artists)) result = Array.from(artists); else return [];
  517.   ampersandParsers.forEach(function(ampersandParser) {
  518. 	for (let i = result.length; i > 0; --i) {
  519. 	  let j = result[i - 1].split(ampersandParser).map(strip);
  520. 	  if (j.length <= 1 || !j.every(looksLikeTrueName) || getSiteArtist(result[i - 1])) continue;
  521. 	  result.splice(i - 1, 1, ...j.filter(function(artist) {
  522. 		return !result.includesCaseless(artist) && !pseudoArtistParsers.some(rx => rx.test(artist));
  523. 	  }));
  524. 	}
  525.   });
  526.   return result;
  527. }